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Gravitational field has energy, E field does not?

  1. Nov 1, 2011 #1
    Watched a physics lecture yesterday in which the teacher stated that a G field has energy, but an E filed (due to the Coulomb force does not). This does not compute. Both fields have potential energy, yes?
     
  2. jcsd
  3. Nov 1, 2011 #2

    Pengwuino

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    Gold Member

    Yes, that doesn't make sense. Are you sure that's what they meant?
     
  4. Nov 1, 2011 #3
    Maybe not. The exact statement was "In an ordinary sense, electric charge is not energy, but gravitational charge is energy". So maybe I am misunderstanding the statement.
     
  5. Nov 1, 2011 #4
    Okay that clears it up. They are talking about the equivalence between mass and energy that comes out of relativity. There is no analogous equivalence for charge.
     
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